package com.sayd.sjxc.widget.edittext;

import android.content.Context;
import android.graphics.drawable.Drawable;
import android.text.Editable;
import android.text.TextWatcher;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.CycleInterpolator;
import android.view.animation.TranslateAnimation;
import android.widget.EditText;

import com.android.base.utils.MLog;
import com.sayd.sjxc.R;


public class ClearEditText extends EditText implements
        View.OnFocusChangeListener, TextWatcher {
    /** 
     * 删除按钮的引用 
     */  
    private Drawable mClearDrawable;
    /** 
     * 控件是否有焦点 
     */  
    private boolean hasFoucs;
    /**
     * 输入框内容变化监听
     * */
    private TextChangeListener mTextChangeListener;


   
    public ClearEditText(Context context) {
        this(context, null);   
    }   
   
    public ClearEditText(Context context, AttributeSet attrs) {
        //这里构造方法也很重要，不加这个很多属性不能再XML里面定义  
        this(context, attrs, android.R.attr.editTextStyle);
    }   
      
    public ClearEditText(Context context, AttributeSet attrs, int defStyle) {  
        super(context, attrs, defStyle);  
        init();  
    }

    public void setTextChangeListener(TextChangeListener mTextChangeListener){
        this.mTextChangeListener = mTextChangeListener;
    }
      
    private void init() {   
        //获取EditText的DrawableRight,假如没有设置我们就使用默认的图片  
        mClearDrawable = getCompoundDrawables()[2];   
        if (mClearDrawable == null) {   
//          throw new NullPointerException("You can add drawableRight attribute in XML");  
            mClearDrawable = getResources().getDrawable(R.mipmap.edittext_clear_img);
        }   
          
        mClearDrawable.setBounds(0, 0, mClearDrawable.getIntrinsicWidth(), mClearDrawable.getIntrinsicHeight());   
        //默认设置隐藏图标  
        setClearIconVisible(false);   
        //设置焦点改变的监听  
        setOnFocusChangeListener(this);   
        //设置输入框里面内容发生改变的监听  
        addTextChangedListener(this);   
    }   
   
   
    /** 
     * 因为我们不能直接给EditText设置点击事件，所以我们用记住我们按下的位置来模拟点击事件 
     * 当我们标按下的位置 在  EditText的宽度 - 图标到控件右边的间距 - 图的宽度  和
     * EditText的宽度 - 图标到控件右边的间距之间我们就算点击了图标，竖直方向就没有考虑 
     */  
    @Override   
    public boolean onTouchEvent(MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_UP) {  
            if (getCompoundDrawables()[2] != null) {  
  
                boolean touchable = event.getX() > (getWidth() - getTotalPaddingRight())  
                        && (event.getX() < ((getWidth() - getPaddingRight())));  
                  
                if (touchable) {  
                    this.setText("");  
                }  
            }  
        }  
  
        return super.onTouchEvent(event);  
    }  
   
    /** 
     * 当ClearEditText焦点发生变化的时候，判断里面字符串长度设置清除图标的显示与隐藏 
     */  
    @Override   
    public void onFocusChange(View v, boolean hasFocus) {
        this.hasFoucs = hasFocus;

        MLog.i("mus","hasFocus: "+hasFocus);

        if (hasFocus) {   
            setClearIconVisible(getText().length() > 0);   
        } else {   
            setClearIconVisible(false);   
        }   
    }   
   
   
    /** 
     * 设置清除图标的显示与隐藏，调用setCompoundDrawables为EditText绘制上去 
     * @param visible 
     */  
    protected void setClearIconVisible(boolean visible) {   
        Drawable right = visible ? mClearDrawable : null;   
        setCompoundDrawables(getCompoundDrawables()[0],   
                getCompoundDrawables()[1], right, getCompoundDrawables()[3]);   
    }   
       
      
    /** 
     * 当输入框里面内容发生变化的时候回调的方法 
     */  
    @Override   
    public void onTextChanged(CharSequence s, int start, int count,   
            int after) {   
                if(hasFoucs){  
                    setClearIconVisible(s.length() > 0);  
                }
            if(mTextChangeListener!=null){
                mTextChangeListener.onTextChanged(s.length());
            }


    }   
   
    @Override   
    public void beforeTextChanged(CharSequence s, int start, int count,   
            int after) {   
           
    }   
   
    @Override   
    public void afterTextChanged(Editable s) {
           
    }   
      
     
    /** 
     * 设置晃动动画 
     */  
    public void setShakeAnimation(){  
        this.setAnimation(shakeAnimation(5));  
    }  
      

    /** 
     * 晃动动画 
     * @param counts 1秒钟晃动多少下 
     * @return 
     */  
    public static Animation shakeAnimation(int counts){
        Animation translateAnimation = new TranslateAnimation(0, 10, 0, 0);
        translateAnimation.setInterpolator(new CycleInterpolator(counts));
        translateAnimation.setDuration(1000);
        return translateAnimation;  
    }

    public void setFocusAndShowDrawble(){
        this.setFocusable(true);
        this.requestFocus();
    }

    public interface TextChangeListener{
        void onTextChanged(int length);
    }

}